founding product engineer

why telli?

we are building AI voice agents that change the way businesses communicate with their customers. Voice is the most natural way humans communicate. However, high-quality voice interactions have historically struggled to scale. Businesses have had to rely on clunky user interfaces and complex contact centers - compromising on customer experience.

with AI voice agents, businesses can suddenly scale high-quality voice interactions. However, the technology alone isn't enough. At telli, we believe businesses need a simple, tailored tool that helps them bring their customer communication channels to a new AI-first era.

we were part of the Y Combinator Fall '24 batch and are building a small but high-performing team right in the heart of Berlin.

about the role

we’re looking for driven founding product engineer with incredibly high agency!

• work closely with our customers, understand their problems, and come up with killer product features
• build scalable backend infrastructure to handle thousands of AI phone calls a day
• design intuitive customer experiences for our non-technical customers

team & culture

we are bringing together a small all-star team right and are looking for people excited to build the future with us.

join us (Finn, Philipp, Seb and Paulus) on this quest!

we care deeply about doing excellent work, and we’re looking for a like-minded software engineer to join our product engineering team.

thriving at telli requires a few core skills:

• product mindset: our tech stack includes TypeScript, React, TanStack, Node, Postgres as well as temporal.io. But more than familiarity with any specific technology, we value a customer-centric approach and ability to ship end-to-end features.
• ability to work fast in a high-ambiguity environment: as an early-stage startup, we’re inventing a product as well as building it. We’re moving fast. If you have a proven track record of delivering high-quality software in a strong engineering team, that’s a big plus.
• desire to work out of our HQ in Berlin: we believe quality of interactions is higher in an in-person environment. We collaborate deeply and often communicate by tapping one another on the shoulder.

read more about how we build software here: hi.telli.com/principles.

what makes you a great fit

• you enjoy challenging work and going the extra mile
• your skills have significant (but not necessarily 100%) overlap with what we do – frontend engineering, server development, databases, cloud providers, LLM & Voice AI
• you enjoy contributing to the entire development stack
• you want to have an impact from day one
• you want to work with smart and friendly people with (self-reported) low ego

you may not make a good fit if…

• you prefer a remote-first environment
• you like to work on your own with minimum collaboration
• you want to work 9-5
• you have no prior experience in software engineering teams

perks

• salary range: €70k - €120k
• equity range: 0.3% - 1.3%
• access to any software product that makes you more productive
• gym subscription
• a bright and beautiful office in Berlin Mitte
• 3-4 week company trip to San Francisco in fall 2025